Dataset Overview | National Centers for Environmental Information (NCEI)

Water temperature, acoustic travel time, pressure, and currents taken by current and pressure recording inverted echo sounder offshore of Oregon in the Northeast Pacific Ocean from 2017-04-27 to 2017-11-11 (NCEI Accession 0201488)

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This data set contains vertical acoustic travel time, bottom pressure and temperature, as well as near-bottom current and temperature taken by four current and pressure recording inverted echo sounders (CPIES) near the Cascadia subduction zone offshore of Oregon from 2017-04-27 to 2017-11-11. Travel time and pressure measurements from two additional PIES (lacking the integrated current meter) are included. Near-bottom velocities were also measured by a current meter on a separate mooring between August and November 2017. The CPIES data are the highest quality versions with the least amount of processing. The collection and processing of the data are described in the report provided. Data are in NetCDF.

Dataset Citation

Cite as: Tracey, Karen L.; Watts, D. Randolph; Donohue, Kathleen A.; Wei, Meng (2019). Water temperature, acoustic travel time, pressure, and currents taken by current and pressure recording inverted echo sounder offshore of Oregon in the Northeast Pacific Ocean from 2017-04-27 to 2017-11-11 (NCEI Accession 0201488). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0201488. Accessed [date].

Dataset Identifiers

ISO 19115-2 Metadata

gov.noaa.nodc:0201488

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Download Data	HTTPS (download) Navigate directly to the URL for data access and direct download. FTP (download) These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP).
Distribution Formats	Originator data format
Ordering Instructions	Contact NCEI for other distribution options and instructions.
Distributor	NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov
Dataset Point of Contact	NOAA National Centers for Environmental Information ncei.info@noaa.gov

Time Period	2017-04-27 to 2017-11-11
Spatial Bounding Box Coordinates	West: -125.4014 East: -125.1557 South: 44.4472 North: 44.4752
Spatial Coverage Map

General Documentation

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Descriptive Information
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Publication Dates	publication: 2019-09-04 creation: 2019-08-30
Data Presentation Form	Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status	Complete - production of the data has been completed Historical archive - data has been stored in an offline storage facility
Data Update Frequency	As needed
Purpose	These data were collected to provide measurements of the ocean currents in a region where slow-slip tectonic events can occur.
Use Limitations	accessLevel: Public Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.

Dataset Citation	Cite as: Tracey, Karen L.; Watts, D. Randolph; Donohue, Kathleen A.; Wei, Meng (2019). Water temperature, acoustic travel time, pressure, and currents taken by current and pressure recording inverted echo sounder offshore of Oregon in the Northeast Pacific Ocean from 2017-04-27 to 2017-11-11 (NCEI Accession 0201488). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0201488. Accessed [date].
Cited Authors	Tracey, Karen L. University of Rhode Island, Graduate School of Oceanography (GSO) Watts, D. Randolph University of Rhode Island, Graduate School of Oceanography (GSO) Donohue, Kathleen A. Wei, Meng
Principal Investigators	D. Randolph Watts University of Rhode Island, Graduate School of Oceanography (GSO) Kathleen Donohue University of Rhode Island, Graduate School of Oceanography (GSO) Meng Wei University of Rhode Island, Graduate School of Oceanography (GSO)
Contributors	University of Rhode Island, Graduate School of Oceanography (GSO)
Resource Providers	Karen L. Tracey University of Rhode Island, Graduate School of Oceanography (GSO) University of Rhode Island, Graduate School of Oceanography (GSO)
Publishers	NOAA National Centers for Environmental Information
Acknowledgments	Funding Agency: National Science Foundation

Theme keywords	NODC DATA TYPES THESAURUS ACOUSTIC TRAVEL TIME CURRENT METER - EAST-WEST COMPONENT (U) CURRENT METER - NORTH-SOUTH COMPONENT (V) HYDROSTATIC PRESSURE WATER TEMPERATURE NODC OBSERVATION TYPES THESAURUS in situ physical WMO_CategoryCode oceanography Global Change Master Directory (GCMD) Science Keywords EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > OCEAN CURRENTS EARTH SCIENCE > OCEANS > OCEAN PRESSURE > WATER PRESSURE EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE
Data Center keywords	NODC COLLECTING INSTITUTION NAMES THESAURUS University of Rhode Island, Graduate School of Oceanography NODC SUBMITTING INSTITUTION NAMES THESAURUS University of Rhode Island, Graduate School of Oceanography Global Change Master Directory (GCMD) Data Center Keywords URI/GSO > Graduate School of Oceanography, University of Rhode Island
Platform keywords	NODC PLATFORM NAMES THESAURUS moorings Global Change Master Directory (GCMD) Platform Keywords MOORINGS
Instrument keywords	NODC INSTRUMENT TYPES THESAURUS current meter inverted echo sounder (IES) pressure sensor Global Change Master Directory (GCMD) Instrument Keywords CURRENT METERS IES > Inverted Echo Sounders PRESSURE SENSORS > PRESSURE SENSORS
Place keywords	NODC SEA AREA NAMES THESAURUS Northeast Pacific Ocean (limit-180) Global Change Master Directory (GCMD) Location Keywords OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN
Keywords	NCEI ACCESSION NUMBER 0201488
Keywords	Send2NCEI Submission Package ID 9R7UE4

Use Constraints	Cite as: Tracey, Karen L.; Watts, D. Randolph; Donohue, Kathleen A.; Wei, Meng (2019). Water temperature, acoustic travel time, pressure, and currents taken by current and pressure recording inverted echo sounder offshore of Oregon in the Northeast Pacific Ocean from 2017-04-27 to 2017-11-11 (NCEI Accession 0201488). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0201488. Accessed [date].
Access Constraints	Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
Fees	In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.

Lineage information for: dataset
Processing Steps	2019-09-04T19:28:11Z - NCEI Accession 0201488 v1.1 was published.
Output Datasets	NCEI Accession 0201488 v1.1 NCEI Accession 0201488 v1.1 (download) published 2019-09-04T19:28:11Z

Lineage information for: dataset
Processing Steps	Parameter or Variable: ACOUSTIC TRAVEL TIME (measured); Units: seconds; Observation Category: in situ; Sampling Instrument: inverted echo sounder (IES); Sampling and Analyzing Method: 24 pings obtained each hour were windowed to remove large outliers; additional data spikes removed; hourly values obtained as the average of a few pings around the first quartile value of the remaining pings; Data Quality Method: Highest quality version after least amount of processing Parameter or Variable: HYDROSTATIC PRESSURE (measured); Units: decibar; Observation Category: in situ; Sampling Instrument: pressure sensors; Sampling and Analyzing Method: Water pressure at the seafloor. Pressure sensor housed inside inverted echo sounder on a rigid anchor stand. Hourly average of six measurements taken at 10 minute intervals. An exponential-linear curve was fitted to determine instrumental drift. The drift curve was subtracted from the measurements; Data Quality Method: Highest quality version after the least amount of processing Parameter or Variable: TEMPERATURE - WATER [WATER TEMPERATURE] (measured); Units: degrees Celsius; Observation Category: in situ; Sampling Instrument: pressure sensors; Sampling and Analyzing Method: Temperature quartz crystal integral to the pressure sensor inside the glass housing of an inverted echo sounder. Hourly average of six measurements taken at 10 minute intervals; Data Quality Method: Highest quality version after least amount of processing Parameter or Variable: CURRENT METER - EAST-WEST COMPONENT (U) (measured); Units: centimeters/second; Observation Category: in situ; Sampling Instrument: Doppler current sensor; Sampling and Analyzing Method: Hourly average of six measurements taken at 10 minute intervals. Current sensor was tethered 50 m above the CPIES with flotation. Currents were also measured every 20 minutes by a RCM located 50 m above the seafloor on a separate mooring; Data Quality Method: CPIES currents are highest quality with least amount of processing. The RCM currents underwent minimal processing Parameter or Variable: CURRENT METER - NORTH-SOUTH COMPONENT (V) (measured); Units: centimeters/second; Observation Category: in situ; Sampling Instrument: Doppler current sesnor; Sampling and Analyzing Method: Hourly average of six measurements taken at 10 minute intervals. Current sensor was tethered 50 m above the CPIES with flotation. Currents were also measured every 20 minutes by a RCM located 50 m above the seafloor on a separate mooring; Data Quality Method: CPIES currents are the highest quality with least amount of processing. The RCM currents underwent minimal processing Parameter or Variable: CURRENT METER - SPEED (measured); Units: centimeters/second; Observation Category: in situ; Sampling Instrument: Doppler current sensor; Sampling and Analyzing Method: Daily averaged values of both velocity components created by applying a Godin filter to remove the tides. Converted back to current speed. Current meter was tethered 50 m above the seafloor with flotation; Data Quality Method: Highest quality Parameter or Variable: CURRENT METER - DIRECTION (measured); Units: degrees T; Observation Category: in situ; Sampling Instrument: Doppler current sensor; Sampling and Analyzing Method: Daily averaged values of both velocity components created by applying a Godin filter to remove the tides. Converted back to current direction. Current meter was tethered 50 m above the seafloor with flotation; Data Quality Method: Highest quality

Lineage information for: dataset

Processing Steps

Parameter or Variable: ACOUSTIC TRAVEL TIME (measured); Units: seconds; Observation Category: in situ; Sampling Instrument: inverted echo sounder (IES); Sampling and Analyzing Method: 24 pings obtained each hour were windowed to remove large outliers; additional data spikes removed; hourly values obtained as the average of a few pings around the first quartile value of the remaining pings; Data Quality Method: Highest quality version after least amount of processing
Parameter or Variable: HYDROSTATIC PRESSURE (measured); Units: decibar; Observation Category: in situ; Sampling Instrument: pressure sensors; Sampling and Analyzing Method: Water pressure at the seafloor. Pressure sensor housed inside inverted echo sounder on a rigid anchor stand. Hourly average of six measurements taken at 10 minute intervals. An exponential-linear curve was fitted to determine instrumental drift. The drift curve was subtracted from the measurements; Data Quality Method: Highest quality version after the least amount of processing
Parameter or Variable: TEMPERATURE - WATER [WATER TEMPERATURE] (measured); Units: degrees Celsius; Observation Category: in situ; Sampling Instrument: pressure sensors; Sampling and Analyzing Method: Temperature quartz crystal integral to the pressure sensor inside the glass housing of an inverted echo sounder. Hourly average of six measurements taken at 10 minute intervals; Data Quality Method: Highest quality version after least amount of processing
Parameter or Variable: CURRENT METER - EAST-WEST COMPONENT (U) (measured); Units: centimeters/second; Observation Category: in situ; Sampling Instrument: Doppler current sensor; Sampling and Analyzing Method: Hourly average of six measurements taken at 10 minute intervals. Current sensor was tethered 50 m above the CPIES with flotation. Currents were also measured every 20 minutes by a RCM located 50 m above the seafloor on a separate mooring; Data Quality Method: CPIES currents are highest quality with least amount of processing. The RCM currents underwent minimal processing
Parameter or Variable: CURRENT METER - NORTH-SOUTH COMPONENT (V) (measured); Units: centimeters/second; Observation Category: in situ; Sampling Instrument: Doppler current sesnor; Sampling and Analyzing Method: Hourly average of six measurements taken at 10 minute intervals. Current sensor was tethered 50 m above the CPIES with flotation. Currents were also measured every 20 minutes by a RCM located 50 m above the seafloor on a separate mooring; Data Quality Method: CPIES currents are the highest quality with least amount of processing. The RCM currents underwent minimal processing
Parameter or Variable: CURRENT METER - SPEED (measured); Units: centimeters/second; Observation Category: in situ; Sampling Instrument: Doppler current sensor; Sampling and Analyzing Method: Daily averaged values of both velocity components created by applying a Godin filter to remove the tides. Converted back to current speed. Current meter was tethered 50 m above the seafloor with flotation; Data Quality Method: Highest quality
Parameter or Variable: CURRENT METER - DIRECTION (measured); Units: degrees T; Observation Category: in situ; Sampling Instrument: Doppler current sensor; Sampling and Analyzing Method: Daily averaged values of both velocity components created by applying a Godin filter to remove the tides. Converted back to current direction. Current meter was tethered 50 m above the seafloor with flotation; Data Quality Method: Highest quality

Acquisition Information (collection)
Instrument	current meter inverted echo sounder (IES) pressure sensor
Platform	moorings

Last Modified: 2025-05-16T15:45:05Z
For questions about the information on this page, please email: ncei.info@noaa.gov

Water temperature, acoustic travel time, pressure, and currents taken by current and pressure recording inverted echo sounder offshore of Oregon in the Northeast Pacific Ocean from 2017-04-27 to 2017-11-11 (NCEI Accession 0201488)

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